On the left side of the equation is one or more response variables, Y. On the right hand side is one or more predictor variables, X, and their coefficients, B. X, the variables on the right hand side can have many forms and are called by many names.
Subscribe to our Digestive Health e-newsletter to stay up to date on digestive health topics. The exact cause of ulcerative colitis remains unknown. Previously, diet and stress were suspected, but now doctors know that these factors may aggravate but don't cause ulcerative colitis.One possible cause is an immune system malfunction.reviously, diet and stress were suspected, but now doctors know that these factors may aggravate but don't cause ulcerative colitis.
Ulcerative colitis is a disease that affects the large intestine (also known as the colon) and the rectum. Although the causes of ulcerative colitis are unknown, some researchers believe that an autoimmune process may be a factor in the disease.riffithâs story sounds familiar to Gerard E. Mullin, MD, director of integrative GI nutrition services at Johns Hopkins Hospital in Baltimore. While stress doesnât cause ulcerative colitis, research shows it can increase the risk of flare-ups, says Mullin. Take WebMD's Ulcerative Colitis Health Check.